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How to deal with the singularity in calculation of a closed shell of revolution?

Submitted by Hongping Hu on

I want to numerical calculate vibration of a closed shell of revolution with double layers. There exists Coefficient cot(θ) in the governing equation, where θ is angle between the revolving axle and normal line. Therefore, cot(θ) will incline to infinity when θ is close to zero for the vertex point on the revolving axle. How to deal with the singularity? Can you give me some advices or reference article? Thanks.

Finite Width Effect of Thin Films Buckling on Compliant Substrate

Submitted by Hanqing Jiang on

Buckling of stiff thin films on compliant substrates has many important applications ranging from stretchable electronics to precision metrology and sensors.  John Hutchinson, Zhiggang Suo, Rui Huang, Xi Chen et al. have developed nice theories for stiff thin film buckling on soft substrate.

Yonggang Huang was awarded the Guggenheim Fellowship in 2008

Submitted by Hanqing Jiang on

Prof. Yonggang Huang of Northwestern University was awarded the Guggenheim Fellowship in 2008. Today, the president of the John Simon Guggenheim Memorial Foundation, Edward Hirsch announced that 190 new fellowships were choosen from more than 2,600 applicants (news ). Yonggang won the competition because of his achievement on atomistic-based continuum theory for nanomaterials. A complete list is here

How shell-like is a carbon nanotube?

Submitted by Pradeep Sharma on

(Carbon) Nanotubes have attracted considerable attention from the mechanics community; probably second to none when it comes to nanotechnologies. Although I personally have done very little in this particular topic, I have enjoyed reading about the many developments made by mechanicians in terms of modeling the behavior of nanotubes and the applicability of standard continuum mechanics notions. A post on this subject on iMechanica, which received a fair amount of attention from many mechanicians involved in this topic, may be found here .

Elastic solution for a hole in an infinite space

Submitted by MScaraggi on

Dear All,

the solution of an elastic half space subjected to any generalized load may be seen as the solution of another elastic problem, that is elastic space with an infinite length hole when the hole radius goes to infinite.

Is there a "general" solution for that elastic problem? For general I mean a solution that can be used e.g. like a kernel in a convolution operation.

The Department of Engineering Mechanics, University of Nebraska-Lincoln, invites applications for a Research Assistant Professor

Submitted by engmech on

To enhance its leadership position and focus for the future, UNL CoE is now deploying a new strategic approach in biomaterials, focusing on novel experiments and ground-breaking research. UNL external research funding has tripled in the last decade. The investment of these funds enables the university to support innovative research projects, hire top faculty and provide them with equipment and facilities to achieve their goals. 

the polyimide film materials world

Submitted by bakgo on

Polyimide film,quivalent to Kapton HN,VN,FN(Fep FH,FHF),Silicone adhesive Polyimide tape,Acrylic coated Polyimide tape,copper clad polyimide sheet,Nomex laminated Polyimide sheet,Flame retardant plastic film(PP,PET) and extra big NiZn ferrite magnet etc.

 

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